Connector assembly

A connector assembly comprising a first connector and a second connector, wherein:

• the second connector is mateable with the first connector, which is located therebelow in an upper-lower direction, along the upper-lower direction;
• the first connector comprises a first housing and one or more first terminals;
• each of the first terminals is held by the first housing;
• the first housing is provided with a slide surface, a lock surface, a catch surface and a guide portion;
• each of the slide surface and the catch surface extends in the upper-lower direction;
• the catch surface is, at least in part, located below the slide surface;
• the lock surface has a deep end;
• the deep end is located at a rear end of the lock surface in a front-rear direction perpendicular to the upper-lower direction;
• the lock surface faces downward and extends from the deep end toward the slide surface in the front-rear direction;
• the guide portion is located forward of the slide surface;
• the second connector comprises a second housing and one or more second terminals;
• each of the second terminals is held by the second housing;
• the second housing is provided with a spring portion, a locked portion and a guided portion;
• the spring portion has a fixed portion and a support portion and is resiliently deformable;
• the fixed portion is fixed to a fixing portion of the second housing;
• the support portion is connected to the fixed portion;
• the locked portion projects rearward from the support portion;
• the support portion extends upward from the locked portion;
• the locked portion is movable in the front-rear direction in accordance with a resilient deformation of the spring portion;
• the locked portion has a locked surface;
• the locked surface is an upper surface of the locked portion which faces upward;
• the guided portion is located forward of the spring portion;
• in a mating process in which the second connector is mated with the first connector, the second connector is moved downward while the guided portion is guided by the guide portion;
• in the mating process, the locked portion slides on the slide surface to be moved downward while being pressed against the slide surface;
• the lock surface intersects with a line segment which extends straight upward from the lock surface by a first angle of 90 degrees or less in a perpendicular plane defined by the upper-lower direction and the front-rear direction;
• when the second connector is under a separated state where the second connector is separated from the first connector, the locked surface intersects with another line segment which extends straight upward from the locked surface by a second angle of 90 degrees or less in the perpendicular plane;
• when the locked portion is moved downward beyond the slide surface in the mating process, the locked portion is moved rearward, and a second abutment portion of the locked portion is brought into abutment with a first abutment portion of the catch surface;
• a first distance D11, which is a distance along the front-rear direction between the first abutment portion and the guide portion, is shorter than a second distance D21 which is another distance along the front-rear direction between the second abutment portion and the guided portion of the second connector under the separated state;
• and
• under a mated state where the first connector and the second connector are mated with each other, the locked surface is located below the lock surface, and the fixed portion of the spring portion is located forward of the lock surface.